@function strip-unit($number) {
    @if type-of($number) == 'number' and not unitless($number) {
        @return $number / ($number * 0 + 1);
    }
    @return $number;
}

@function rem-default($number) {
    $number: strip-unit($number);
    @return (($number / 16) * 1rem);
}

@function rem($number) {
    @return $number;
    //$number: strip-unit($number);
    //@return (($number / 16) * 1rem);
}

